Evidence for α -cluster structure in Ne21 in the first measurement of resonant O17+α elastic scattering
| Autor: | Alexander Volya, M. S. Golovkov, V. Z. Goldberg, D. K. Nauruzbayev, A. K. Nurmukhanbetova |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Physical Review C. 100 |
| ISSN: | 2469-9993 2469-9985 |
| Popis: | The first study of resonances in $^{17}\mathrm{O}+\ensuremath{\alpha}$ elastic scattering was carried out using the thick target inverse kinematics method. The data were analyzed in the framework of an R-matrix approach. Many $\ensuremath{\alpha}$-cluster states were found in the $^{21}\mathrm{Ne}$ excitation region of the 9--13 MeV excitation energy including the first observation of a broad $l=0$ state in an odd-even nucleus, which is likely the analog of the broad ${0}^{+}$ at 8 MeV in $^{20}\mathrm{Ne}$. The observed structure in $^{21}\mathrm{Ne}$ appeared to be strikingly similar to that populated in the resonant $^{16}\mathrm{O}+\ensuremath{\alpha}$ scattering in $^{20}\mathrm{Ne}$. The results are also useful for refinement of data on an $^{17}\mathrm{O}(\ensuremath{\alpha},n)$ reaction important for astrophysics. |
| Databáze: | OpenAIRE |
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